Tensile and anti-torsion test tool assembly

Abstract

The utility model relates to the technical field of battery testing, in particular to a tensile and torsion-resistant testing tool assembly, which comprises a connecting piece, a tensile tool assembly and a torsion-resistant tool assembly. The connecting piece is welded to the pole, and the stress part of the connecting piece protrudes out of the first side face. The tensile tool assembly comprises a first supporting plate provided with a first avoiding notch, the connecting piece is located at the first avoiding notch so that the stress part and the pole can be located on the two sides of the first supporting plate in the first direction, the tensile equipment can pull the stress part in the first direction, the pole can be indirectly subjected to tensile force, and the tensile test of the pole can be conducted. The torsion-resistant tool assembly comprises a second supporting plate and a third supporting plate, when the thrust equipment pushes the stress part in the second direction, the second side face abuts against the second supporting plate, the third side face abuts against the third supporting plate, and the second direction is parallel to the side edge, intersecting with the end face, of the first side face. And when the thrust equipment pushes the stress part along the second direction, the post terminal is subjected to a force in a direction tangent to the side wall of the post terminal, so that the torsion resistance test of the post terminal is carried out.

Description

Technical Field

[0001] The utility model relates to the technical field of battery testing, in particular to a tensile and torsion-resistant test tooling assembly. Background Art

[0002] During the actual use of a battery, charge and discharge are required. During the process of lithium ions in the internal electrode sheet of the battery being deintercalated and intercalated, the battery core will gradually expand and its thickness will increase. The large surface of the battery core presents a slightly convex bulging state. The deformed battery core casing will exert a certain tensile force and torsional force on the battery core terminal. The battery core is connected to an external circuit through the positive and negative terminals. The mechanical properties of the terminals will directly affect the safety, reliability and stability of the battery, that is, no deformation or loosening will also have a certain impact on the performance and life of the battery core. However, there is no test tooling for the tensile and torsion-resistant characteristics of the battery core terminals in the prior art.

[0003] Therefore, there is an urgent need for a tensile and torsion-resistant test tooling assembly to solve the above problems. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a tensile and torsion-resistant test tooling assembly, which can assist in testing the tensile and torsion-resistant characteristics of the battery core terminals.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] Provide a tensile and torsion-resistant test tooling assembly for assisting in testing the tensile and torsion-resistant characteristics of the terminals of a battery core. The battery core includes an end face, a first side face, a second side face and a third side face all connected to the end face. The terminal is arranged on the end face. The first side face, the second side face and the third side face are connected in sequence. The tensile and torsion-resistant test tooling assembly includes:

[0007] A connecting piece, which is welded to the terminal, and the stress-bearing part of the connecting piece protrudes from the first side face;

[0008] A tensile tooling assembly, which includes a first support plate. A first avoidance notch is formed on the first support plate. The connecting piece is located at the first avoidance notch, so that the stress-bearing part and the terminal are located on both sides of the first support plate along a first direction. A tensile device can pull the stress-bearing part along the first direction;

[0009] A torsion-resistant tooling assembly, which includes a second support plate and a third support plate. When a thrust device pushes the stress-bearing part along a second direction, the second side face abuts against the second support plate, and the third side face abuts against the third support plate. The second direction is parallel to the side where the first side face intersects with the end face.

[0010] Optionally, the tensile tooling assembly further includes a load-bearing plate. Both the load-bearing plate and the first support plate are horizontally arranged. The load-bearing plate is vertically below the first support plate. The battery cell is placed between the load-bearing plate and the first support plate, and the first direction is vertically upward.

[0011] Optionally, the tensile tooling assembly further includes a connecting rod for connecting the load-bearing plate and the first support plate.

[0012] Optionally, the connecting rod is a first threaded rod. A first threaded hole is formed in the load-bearing plate, and a second threaded hole is formed in the first support plate. The first threaded rod is in threaded fit with both the first threaded hole and the second threaded hole.

[0013] Optionally, there are N first threaded rods, N first threaded holes, and N second threaded holes. The N first threaded rods are arranged at intervals, and the N first threaded holes and N second threaded holes are respectively in fit with the N first threaded rods.

[0014] Optionally, the torsion-resistant tooling assembly includes a box body. Part of the battery cell is located inside the box body. The box body is provided with a second avoidance hole, and the force-receiving part is located outside the box body through the second avoidance hole. The second support plate and the third support plate are two plates on the box body.

[0015] Optionally, the torsion-resistant tooling assembly further includes a limiting plate connected to the box body. The limiting plate is used to limit the battery cell from separating from the bottom surface of the box body, and the vertical distance between the limiting plate and the opening of the box body can be adjusted.

[0016] Optionally, the torsion-resistant tooling assembly further includes an adjusting rod for connecting the limiting plate and the box body.

[0017] Optionally, the adjusting rod is a second threaded rod. A third threaded hole is formed in the limiting plate, and a fourth threaded hole is formed in the box body. The second threaded rod is in threaded fit with both the third threaded hole and the fourth threaded hole.

[0018] Optionally, there are M second threaded rods, M third threaded holes, and M fourth threaded holes. The M second threaded rods are arranged at intervals, and the M third threaded holes and M fourth threaded holes are respectively in fit with the M second threaded rods.

[0019] Advantages of the present utility model:

[0020] The present utility model provides a tensile and torsional resistance test tooling assembly for assisting in testing the tensile and torsional resistance characteristics of the pole post of an electric core. The electric core includes an end face, a first side face, a second side face, and a third side face all connected to the end face. The pole post is provided on the end face, and the first side face, the second side face, and the third side face are connected in sequence. The tensile and torsional resistance test tooling assembly includes a connecting piece, a tensile tooling assembly, and a torsional resistance tooling assembly. Among them, the connecting piece is welded to the pole post, and the force-bearing part of the connecting piece protrudes from the first side face. The tensile tooling assembly includes a first support plate, and a first avoidance notch is formed on the first support plate. The connecting piece is located at the first avoidance notch, so that the force-bearing part and the pole post are located on both sides of the first support plate along a first direction. A tensile device can pull the force-bearing part along the first direction, and the pole post will indirectly receive a tensile force. At this time, the first side face of the electric core will abut against the first support plate, and the first support plate can limit the further movement of the electric core. Therefore, the tensile tooling assembly can assist in the tensile test of the pole post. The torsional resistance tooling assembly includes a second support plate and a third support plate. When a thrust device pushes the force-bearing part along a second direction, the second side face abuts against the second support plate, and the third side face abuts against the third support plate. The second direction is parallel to the side where the first side face intersects the end face. When the thrust device pushes the force-bearing part along the second direction, the pole post will receive a force in the direction tangent to its own side wall, that is, similar to a torsional force. The torsional resistance tooling assembly can limit the movement or flipping of the electric core, that is, it can assist in the torsional resistance test of the pole post. Description of the Drawings

[0021] Figure 1 is a schematic structural diagram of the tensile tooling assembly (including the electric core) provided by an embodiment of the present utility model;

[0022] Figure 2 is a schematic structural diagram of the tensile tooling assembly provided by an embodiment of the present utility model;

[0023] Figure 3 is a schematic structural diagram of the torsional resistance tooling assembly (including the electric core) from a first perspective provided by an embodiment of the present utility model;

[0024] Figure 4 is a schematic structural diagram of the torsional resistance tooling assembly (including the electric core) from a second perspective provided by an embodiment of the present utility model;

[0025] Figure 5 is a schematic structural diagram of the torsional resistance tooling assembly from a third perspective provided by an embodiment of the present utility model;

[0026] Figure 6 is a schematic structural diagram of the torsional resistance tooling assembly from a fourth perspective provided by an embodiment of the present utility model.

[0027] In the figure:

[0028] 1. Tensile tooling assembly; 11. First support plate; 111. First avoidance notch; 12. Load-bearing plate; 13. Connecting rod; 14. Limiting block;

[0029] 2. Torsion-resistant tooling assembly; 21. Box body; 211. Second support plate; 212. Third support plate; 213. Second avoidance hole; 22. Limiting plate; 221. Third avoidance hole; 23. Adjusting rod;

[0030] 3. Connecting piece; 31. Force-bearing part;

[0031] 800. Battery cell; 801. End face; 802. First side face; 803. Third side face. Detailed implementation manners

[0032] The technical solution of the present utility model will be further described below in conjunction with the accompanying drawings and implementation manners. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. In addition, it should be noted that for the convenience of description, only the parts related to the present utility model are shown in the drawings, rather than all of them.

[0033] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0034] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "above" and "on the top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "below" and "under the bottom of" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is lower than that of the second feature.

[0035] As Figures 1-3 shown, the tensile and torsion-resistant test tooling assembly of this embodiment is used to assist in testing the tensile and torsion-resistant characteristics of the pole column of the battery cell 800, Figure 1 and the OA direction in Figure 2The OB direction in [it] is the second direction. The battery cell 800 includes an end face 801, a first side face 802, a second side face, and a third side face 803 all connected to the end face 801. The pole post is provided on the end face 801, and the first side face 802, the second side face, and the third side face 803 are connected in sequence. The tensile and torsional resistance test tooling assembly includes a connecting member 3, a tensile tooling assembly 1, and a torsional resistance tooling assembly 2.

[0036] Among them, the connecting member 3 is welded to the pole post, and the force-receiving portion 31 of the connecting member 3 protrudes from the first side face 802, and the connecting member 3 can conveniently apply a force to the pole post. Optionally, in this embodiment, the battery cell 800 is in a cuboid shape, and the first side face 802 is the side face with the largest area. Of course, in other embodiments, the battery cell 800 can also be in other shapes.

[0037] The tensile tooling assembly 1 includes a first support plate 11. A first avoidance notch 111 is formed on the first support plate 11. The connecting member 3 is located at the first avoidance notch 111, so that the force-receiving portion 31 and the pole post are located on both sides of the first support plate 11 along the first direction. The tensile device can pull the force-receiving portion 31 along the first direction, and the pole post will indirectly receive the tensile force. At this time, the first side face 802 of the battery cell 800 will abut against the first support plate 11, and the first support plate 11 can limit the further movement of the battery cell 800. Therefore, the tensile tooling assembly 1 can assist in the tensile test of the pole post. Optionally, two first avoidance notches 111 are symmetrically formed, and the connecting member 3 can protrude from any one of the two sides of the end face 801.

[0038] The torsional resistance tooling assembly 2 includes a second support plate 211 and a third support plate 212. When the thrust device pushes the force-receiving portion 31 along the second direction, the second side face abuts against the second support plate 211, and the third side face 803 abuts against the third support plate 212. The second direction is parallel to the side where the first side face 802 intersects with the end face 801. When the thrust device pushes the force-receiving portion 31 along the second direction, the pole post will receive a force in the direction tangent to its side wall, that is, similar to torsion. The torsional resistance tooling assembly 2 can limit the movement or flipping of the battery cell 800, that is, it can assist in the torsional resistance test of the pole post.

[0039] Optionally, the tensile tooling assembly 1 further includes a load-bearing plate 12. The load-bearing plate 12 and the first support plate 11 are both horizontally arranged. The load-bearing plate 12 is arranged vertically below the first support plate 11. The battery cell 800 is placed between the load-bearing plate 12 and the first support plate 11, and the first direction is vertically upward. That is, the load-bearing plate 12 is used to place the battery cell 800. When the force-receiving portion 31 receives a vertically upward tensile force, the first side face 802 will abut against the side of the first support plate 11 facing the load-bearing plate 12.

[0040] Optionally, the tensile tooling assembly 1 further includes a connecting rod 13 for connecting the load-bearing plate 12 and the first support plate 11. To facilitate adjusting the vertical distance between the load-bearing plate 12 and the first support plate 11 and facilitate placing the battery cell 800 with the connecting member 3 welded, optionally, the connecting rod 13 is a first threaded rod, the load-bearing plate 12 is provided with a first threaded hole, and the first support plate 11 is provided with a second threaded hole. The first threaded rod is in threaded fit with both the first threaded hole and the second threaded hole. Optionally, a locking nut is further included to lock the relative positions of the first support plate 11 and the first threaded rod.

[0041] Optionally, there are N first threaded rods, N first threaded holes, and N second threaded holes. The N first threaded rods are arranged at intervals, and the N first threaded holes and the N second threaded holes are arranged in cooperation with the N first threaded rods to ensure that the vertical distance between the load-bearing plate 12 and the first support plate 11 is the same everywhere, so as to ensure that the first support plate 11 is horizontally arranged, which can prevent the first support plate 11 from tilting and the battery cell 800 from being locally subjected to excessive abutting force.

[0042] Optionally, the torsional resistance tooling assembly 2 includes a box body 21. A part of the battery cell 800 is located inside the box body 21. The box body 21 is provided with a second avoidance hole 213, and the stress part 31 is located outside the box body 21 through the second avoidance hole 213. The second support plate 211 and the third support plate 212 are two plates on the box body 21. In this embodiment, the opening of the box body 21 is vertically upward, the end face 801 of the battery cell 800 is vertically arranged, the connecting member 3 extends horizontally, and the second avoidance hole 213 is located on the side of the box body 21. The second support plate 211 is the bottom of the box body 21, and the third support plate 212 is the side wall on one side of the box body 21. The first side face 802 of the battery cell 800 faces the side wall on the other side of the box body 21. Optionally, second avoidance holes 213 are provided on both of these two opposite side walls of the box body 21. Of course, in other embodiments, the height of the side wall of the box body 21 can also be directly reduced to avoid the connecting member 3.

[0043] Optionally, the torsional resistance tooling assembly 2 further includes a limiting plate 22 connected to the box body 21. The limiting plate 22 is used to limit the battery cell 800 from separating from the bottom surface of the box body 21, and the vertical distance between the limiting plate 22 and the opening of the box body 21 is adjustable. Optionally, the limiting plate 22 is located vertically above the opening of the box body 21.

[0044] Optionally, the torsion-resistant tooling assembly 2 further includes an adjusting rod 23 for connecting the limiting plate 22 and the box body 21. To facilitate adjusting the vertical distance between the limiting plate 22 and the opening of the box body 21 for conveniently placing the battery cell 800 with the connecting member 3 welded thereon, optionally, the adjusting rod 23 is a second threaded rod. A third threaded hole is provided on the limiting plate 22, and a fourth threaded hole is provided on the box body 21. The second threaded rod is in threaded fit with both the third threaded hole and the fourth threaded hole. Rotating the second threaded rod can adjust the position of the limiting plate 22 relative to the second threaded rod. Optionally, the fourth threaded hole is provided at the opening edge of the box body 21. Optionally, the torsion-resistant tooling assembly 2 further includes a locking nut to lock the relative positions of the limiting plate 22 and the opening of the box body 21.

[0045] Optionally, there are M second threaded rods, M third threaded holes, and M fourth threaded holes. The M second threaded rods are arranged at intervals, and the M third threaded holes and the M fourth threaded holes are respectively arranged in cooperation with the M second threaded rods to ensure that the vertical distance between the limiting plate 22 and the opening of the box body 21 is consistent everywhere, so as to ensure that the limiting plate 22 is horizontally arranged.

[0046] Obviously, the above-mentioned embodiments of the present invention are merely examples for clearly explaining the present invention, rather than limiting the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the claims of the present invention.

Claims

1. A tensile and torsion test fixture assembly, characterized in that: Used to assist in testing the tensile and torsional properties of a pole of a battery cell (800), the battery cell (800) comprising an end face (801) and a first side face (802), a second side face and a third side face (803) all connected to the end face (801), the pole being arranged on the end face (801), the first side face (802), the second side face and the third side face (803) being connected in sequence, and the tensile and torsional test fixture assembly comprising: A connecting piece (3), the connecting piece (3) being welded to the pole, and a force-bearing portion (31) of the connecting piece (3) protruding from the first side surface (802); A tensile tooling assembly (1), the tensile tooling assembly (1) comprising a first support plate (11), the first support plate (11) being provided with a first avoidance notch (111), the connecting member (3) being located at the first avoidance notch (111), so that the force-bearing portion (31) and the pole are located on both sides of the first support plate (11) along a first direction, and a tension device can pull the force-bearing portion (31) along the first direction; The anti-torsion tooling assembly (2) comprises a second support plate (211) and a third support plate (212); when the thrust device pushes the force-bearing portion (31) along a second direction, the second side surface abuts against the second support plate (211), and the third side surface (803) abuts against the third support plate (212); and the second direction is parallel to the side where the first side surface (802) intersects with the end surface (801).

2. The tensile and torsion testing fixture assembly according to claim 1, characterized in that: The tensile tooling assembly (1) further comprises a load-bearing plate (12); the load-bearing plate (12) and the first support plate (11) are both arranged horizontally; the load-bearing plate (12) is arranged vertically below the first support plate (11); the battery cell (800) is placed between the load-bearing plate (12) and the first support plate (11); and the first direction is vertically upward.

3. The tensile and torsion testing fixture assembly according to claim 2, characterized in that: The tensile tooling assembly (1) further comprises a connecting rod (13), wherein the connecting rod (13) is used to connect the load-bearing plate (12) and the first support plate (11).

4. The tensile and torsion testing fixture assembly according to claim 3, characterized in that: The connecting rod (13) is a first threaded rod, a first threaded hole is provided on the load-bearing plate (12), a second threaded hole is provided on the first supporting plate (11), and the first threaded rod is threadably matched with the first threaded hole and the second threaded hole.

5. The tensile and torsion testing fixture assembly according to claim 4, characterized in that: There are N first threaded rods, N first threaded holes, and N second threaded holes, the N first threaded rods are arranged at intervals, and the N first threaded holes and the N second threaded holes are arranged in coordination with the N first threaded rods.

6. The tensile and torsion testing fixture assembly according to any one of claims 1 to 5, characterized in that: The anti-torsion tooling assembly (2) comprises a box body (21), the battery cell (800) is partially located inside the box body (21), the box body (21) is provided with a second avoidance hole (213), the force-bearing portion (31) is located outside the box body (21) through the second avoidance hole (213), and the second support plate (211) and the third support plate (212) are two plates on the box body (21).

7. The tensile and torsion testing fixture assembly according to claim 6, characterized in that: The anti-torsion tooling assembly (2) further comprises a limiting plate (22), wherein the limiting plate (22) is connected to the box body (21), and the limiting plate (22) is used to limit the battery cell (800) from being separated from the bottom surface of the box body (21), and the vertical distance between the limiting plate (22) and the opening of the box body (21) is adjustable.

8. The tensile and torsion testing fixture assembly according to claim 7, characterized in that: The anti-torsion tooling assembly (2) further comprises an adjustment rod (23), wherein the adjustment rod (23) is used to connect the limit plate (22) and the box body (21).

9. The tensile and torsion testing fixture assembly according to claim 8, characterized in that: The adjusting rod (23) is a second threaded rod, the limiting plate (22) is provided with a third threaded hole, the box body (21) is provided with a fourth threaded hole, and the second threaded rod is threadably matched with the third threaded hole and the fourth threaded hole.

10. The tensile and torsion testing fixture assembly according to claim 9, characterized in that: There are M second threaded rods, M third threaded holes and M fourth threaded holes, the M second threaded rods are arranged at intervals, and the M third threaded holes and the M fourth threaded holes are arranged in coordination with the M second threaded rods.

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